Sexual deprivation increases ethanol intake in Drosophila.

Sexual deprivation increases ethanol intake in Drosophila.
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DOI:
10.1126/science.1215932
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发表时间:
2012-03-16
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Heberlein U
Heberlein U
中科院分区:
其他
文献类型:
--
作者:
Shohat-Ophir G;Kaun KR;Azanchi R;Mohammed H;Heberlein U

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大脑的奖励系统的进化是为了强化物种生存所需的行为,包括性、食物消耗和社交互动。滥用药物会利用这些神经通路,从而导致成瘾。在这里,我们使用果蝇来研究自然奖励和药物奖励之间的关系。在雄性中,交配会增加神经肽 F (NPF) 水平,而性剥夺则会降低 NPF。 NPF 系统的激活或抑制反过来会增强或降低乙醇偏好。因此,这些结果将性经历、NPF 系统活动和乙醇消耗联系起来。 NPF 神经元的人工激活本身就是奖励,并且排除了乙醇作为奖励的能力。我们认为 NPF/NPF 受体轴的活动代表果蝇奖励系统的状态并相应地改变行为。
The brain's reward systems evolved to reinforce behaviors required for species survival, including sex, food consumption, and social interaction. Drugs of abuse co-opt these neural pathways, which can lead to addiction. Here, we use Drosophila melanogaster to investigate the relationship between natural and drug rewards. In males, mating increased Neuropeptide F (NPF) levels, whereas sexual deprivation reduced NPF. Activation or inhibition of the NPF system in turn enhanced or reduced ethanol preference. These results thus link sexual experience, NPF system activity, and ethanol consumption. Artificial activation of NPF neurons was in itself rewarding and precluded the ability of ethanol to act as a reward. We propose that activity of the NPF/NPF receptor axis represents the state of the fly reward system and modifies behavior accordingly.
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